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b=LAhB4egWDVKTZbo/WjNpEn1Ptf02oJWczukKKktsE1y2dTGpRlXs4Np28vHY1QNHI K+S1q2j2GIlwhDnAUWDXKjFmrUYPPAh6o0YFjC+AzGuJfuOu4GS8oQibhtbpI6jLt6 ZIdMAkFVc8n8B9DeyY1F7iWv51s1kYW1bK8XERhVA3xLT8mKHeCz5pUP4qd8dPHN4p YHIJG5tykKEbSVIdhLiEEHuEHgwROeUnDx31ozmjtbOdH4Mta57efgCv36ezivH5KX p9pPj8kNZvyVDSwFrUkvSEAesHaRzBKqM6s8NoICC3VJaFxXypTOwM+6aAB6DIROZw fYWRdlCPXI9Og== From: SJ Park To: Liew Rui Yan Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v2.1] mm/damon/core: fix false positive in damos_quota_is_full() when esz is zero Date: Wed, 2 Sep 2026 07:10:00 -0700 Message-ID: <20260902141001.86733-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260902084445.27170-1-aethernet65535@gmail.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 88761160014 X-Stat-Signature: ot5ow6s4kzc6w1naqbw4n9q6xjej8ayf X-HE-Tag: 1788358209-78679 X-HE-Meta: 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 GE5cvnHI f5GdoFEf7nt97MkMX1fhyKTHMU6u0BNXHfx1EWpsAkeOt7ez0MaPHmEZGpLqXa4/viVbUif/j0rRpA0u5V61BRR6QKRLhwAH9CoTwOdEi+6OVuLF1qTeeD4UEslL59j1yk/FKppIVjvfTtxVmh7wZ49HZ6LCPwIT4F/j+rZfi2SIwVX3QTOgLJTpoRxGb6BoDETPC6rdAKVmWsYcNZwY0PuadlfJIpdd7FWBTUaixpAtonUDmLt5t+3MnMw94GdTfxQ5eo3DI0OdjKIM8obHLLKtZ8w== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 2 Sep 2026 16:44:45 +0800 Liew Rui Yan wrote: > When setting goal_tuner to 'temporal', if the goal is achieved, > quota->esz_bp will be set to zero. In this case, damos_quota_is_full() > will always return true, even if no regions have been tried to apply at > all. This causes qt_exceeds to increase unexpectedly. To me, this looks logically correct. Could this cause any user issue? Thanks, SJ [...]